[1]陈亚平,吴嘉峰,朱子龙,等.一种新型NG/O2燃气蒸汽混合工质超临界动力循环[J].东南大学学报(自然科学版),2017,47(2):277-282.[doi:10.3969/j.issn.1001-0505.2017.02.014]
 Chen Yaping,Wu Jiafeng,Zhu Zilong,et al.A novel NG/O2 combustion gas and steam mixture with supercritical power cycle[J].Journal of Southeast University (Natural Science Edition),2017,47(2):277-282.[doi:10.3969/j.issn.1001-0505.2017.02.014]
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一种新型NG/O2燃气蒸汽混合工质超临界动力循环()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
47
期数:
2017年第2期
页码:
277-282
栏目:
能源与动力工程
出版日期:
2017-03-20

文章信息/Info

Title:
A novel NG/O2 combustion gas and steam mixture with supercritical power cycle
作者:
陈亚平吴嘉峰朱子龙张宝怀
东南大学能源与环境学院, 南京 210096; 能源热转换及其过程测控教育部重点实验室, 南京 210096
Author(s):
Chen Yaping Wu Jiafeng Zhu Zilong Zhang Baohuai
School of Energy and Environment, Southeast University, Nanjing 210096, China
Key Laboratory of Energy Thermal Conversion and Control of Ministry of Education, Southeast University, Nanjing 210096, China
关键词:
燃气蒸汽混合工质循环(GSMC) NG/O2燃烧 混合工质 储能 二氧化碳捕集
Keywords:
gas and steam mixture cycle(GSMC) NG/O2 combustion mixture energy storage CO2 capture
分类号:
TK123
DOI:
10.3969/j.issn.1001-0505.2017.02.014
摘要:
提出了一种以NG/O2的燃烧产物和给水作为混合工质,集高效发电、调峰、能源存储和二氧化碳捕获等特点于一体的燃气蒸汽混合工质循环(GSMC).低温LNG和液氧通过泵加压后用于CO2的液化捕集,再经前4级抽汽的过热蒸汽冷却段依次预热后经燃烧器进入燃烧室;循环给水通过回热系统后进入燃烧室的火焰管与外壳之间的环形通道,通过吸热后经喷嘴雾化;燃烧产物和雾化给水混合后进入超临界H2O/CO2混合蒸汽透平中膨胀发电.冷凝器分离后的CO2经多个换热器和2级压缩后被低温LNG和液氧预冷和液化.结果表明,在汽轮机进口参数为40 MPa, 800 ℃和冷凝温度为30 ℃条件下,发电输出效率为49.2%,扣除了1/4的ASU制氧所消耗的低谷电能后,等效净效率为46.2%.
Abstract:
A gas and steam mixture cycle(GSMC)was proposed with NG/O2 combustion product and feed water mixture as working medium, which integrates features of high efficiency power generation, peak shaving, energy storage and CO2 capture. The cryogenic liquids of both LNG and liquid oxygen were pumped to a high pressure and absorbed the heat for CO2 liquefaction and then the superheat of the first 4 extraction steam from turbine successively before entering the combustors through the burners. The circulation feed water was heated in the feed water heating system and then injected to the annular channel between the flame tube and the shell cylinder of combustors. The combustion product heats and mixes with the atomized feed water to form supercritical H2O/CO2 mixture vapor for power generation in a turbine. The gaseous CO2 separated from the condenser was precooled and liquefied by the cryogenic liquids of both LNG and liquid oxygen after being compressed to a higher pressure by two compressors with intercooling. The results show that under the conditions of turbine inlet parameters of 40 MPa/800 ℃ and condensation temperature of 30 ℃, the output power efficiency is 49.2% and the equivalent net efficiency is 46.2%, which accounts for 1/4 consumption of off-peak electricity by ASU for liquid O2 production.

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备注/Memo

备注/Memo:
收稿日期: 2016-09-26.
作者简介: 陈亚平(1956—),男,博士,教授,博士生导师, ypgchen@sina.com.
基金项目: 国家自然科学基金资助项目(51276035).
引用本文: 陈亚平,吴嘉峰,朱子龙,等.一种新型NG/O2燃气蒸汽混合工质超临界动力循环[J].东南大学学报(自然科学版),2017,47(2):277-282. DOI:10.3969/j.issn.1001-0505.2017.02.014.
更新日期/Last Update: 2017-03-20